I bought window 41 XL air cooler, and honestly my office room is now really awesome, the features what that cooler has was amazing, like it has dura pump technology, cool flow dispenser and most important it has 41 ltr water tank capacity so I did not need to fill the water now and then, even it has auto louvers too.such an amazing features my air cooler having, I have used it and enjoyed it, I am happy to have this cooler in office. thank you